package functii;
import arbori.Nod;


public class Necunoscuta extends Nod{
	
	public double calcul()
	{
		return getX();
	}
	
	public String derivare()
	{
		return "1";
	}
	public double calculDerivata()
	{
		return 1;
	}
	public String toString()
	{
		return "x";
	}
}
